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annotate proxy_cache_use_stale.t @ 1427:eb1d883305ea

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Tests: avoid edge cases in upstream random two test. Unavailable servers contribute to the number of attempts, if selected, before the balancer would fall back to the default round-robin method. This means that it's quite possible to get server with more connections. To facilitate with selecting two alive servers, down server was removed from the upstream configuration at the cost of slightly worse coverage.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 10 Jan 2019 17:42:34 +0300
parents f5b18471e17a
children 144c6ce732e4
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4 # (C) Nginx, Inc.
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5
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6 # Tests for http proxy cache, proxy_cache_use_stale.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 use IO::Select;
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16
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17 BEGIN { use FindBin; chdir($FindBin::Bin); }
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18
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19 use lib 'lib';
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20 use Test::Nginx qw/ :DEFAULT http_end /;
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21
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22 ###############################################################################
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23
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24 select STDERR; $| = 1;
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25 select STDOUT; $| = 1;
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26
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27 my $t = Test::Nginx->new()->has(qw/http proxy cache rewrite limit_req ssi/)
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28 ->write_file_expand('nginx.conf', <<'EOF');
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29
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30 %%TEST_GLOBALS%%
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31
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32 daemon off;
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33
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34 events {
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35 }
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36
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37 http {
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38 %%TEST_GLOBALS_HTTP%%
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39
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40 proxy_cache_path %%TESTDIR%%/cache levels=1:2 keys_zone=NAME:1m;
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41
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42 limit_req_zone $binary_remote_addr zone=one:1m rate=10r/m;
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43
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44 server {
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45 listen 127.0.0.1:8080;
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46 server_name localhost;
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47
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48 location /ssi.html {
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49 ssi on;
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50 sendfile_max_chunk 4k;
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51 }
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52
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53 location /escape {
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54 proxy_pass http://127.0.0.1:8081;
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55 proxy_cache NAME;
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56 proxy_cache_background_update on;
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57 add_header X-Cache-Status $upstream_cache_status;
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58 }
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59
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60 location / {
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61 proxy_pass http://127.0.0.1:8081;
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62
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63 proxy_cache NAME;
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64
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65 proxy_cache_key $uri;
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66
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67 proxy_cache_revalidate on;
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68
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69 proxy_cache_background_update on;
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70
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71 add_header X-Cache-Status $upstream_cache_status;
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72
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73 location /t4.html {
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74 proxy_pass http://127.0.0.1:8081/t.html;
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75
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76 proxy_cache_revalidate off;
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77 }
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78
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79 location /t5.html {
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80 proxy_pass http://127.0.0.1:8081/t.html;
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81
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82 proxy_cache_background_update off;
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83 }
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84
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85 location ~ /(reg)(?P<name>exp).html {
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86 proxy_pass http://127.0.0.1:8081/$1$name.html;
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87
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88 proxy_cache_background_update on;
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89 }
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90
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91 location /updating/ {
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92 proxy_pass http://127.0.0.1:8081/;
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93
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94 proxy_cache_use_stale updating;
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95 }
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96
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97 location /t7.html {
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98 proxy_pass http://127.0.0.1:8081;
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99
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100 sendfile_max_chunk 4k;
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101 }
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102
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103 location /t8.html {
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104 proxy_pass http://127.0.0.1:8081/t.html;
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105
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106 proxy_cache_valid 1s;
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107 }
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108
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109 if ($arg_if) {
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110 # nothing
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111 }
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112 }
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113 }
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114 server {
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115 listen 127.0.0.1:8081;
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116 server_name localhost;
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117
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118 add_header Cache-Control $http_x_cache_control;
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119
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120 if ($arg_lim) {
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121 set $limit_rate 1k;
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122 }
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123
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124 if ($arg_e) {
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125 return 500;
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126 }
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127
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128 location / { }
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129
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130 location /t6.html {
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131 limit_req zone=one burst=2;
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132 }
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133
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134 location /t9.html {
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135 add_header Cache-Control "max-age=1, stale-while-revalidate=10";
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136 }
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137 }
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138 }
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139
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140 EOF
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141
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142 $t->write_file('t.html', 'SEE-THIS');
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143 $t->write_file('tt.html', 'SEE-THIS');
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144 $t->write_file('t2.html', 'SEE-THIS');
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145 $t->write_file('t3.html', 'SEE-THIS');
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146 $t->write_file('t6.html', 'SEE-THIS');
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147 $t->write_file('t7.html', 'SEE-THIS' x 1024);
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148 $t->write_file('t9.html', 'SEE-THIS' x 1024);
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149 $t->write_file('ssi.html', 'xxx <!--#include virtual="/t9.html" --> xxx');
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150 $t->write_file('escape.html', 'SEE-THIS');
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151 $t->write_file('escape html', 'SEE-THIS');
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152 $t->write_file('regexp.html', 'SEE-THIS');
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153
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154 $t->run()->plan(35);
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155
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156 ###############################################################################
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157
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158 like(get('/t.html', 'max-age=1, stale-if-error=5'), qr/MISS/, 'stale-if-error');
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159 like(http_get('/t.html?e=1'), qr/HIT/, 's-i-e - cached');
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160
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161 like(get('/t2.html', 'max-age=1, stale-while-revalidate=10'), qr/MISS/,
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162 'stale-while-revalidate');
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163 like(http_get('/t2.html'), qr/HIT/, 's-w-r - cached');
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164
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165 get('/tt.html', 'max-age=1, stale-if-error=3');
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166 get('/t3.html', 'max-age=1, stale-while-revalidate=2');
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167 get('/t4.html', 'max-age=1, stale-while-revalidate=3');
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168 get('/t5.html', 'max-age=1, stale-while-revalidate=3');
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169 get('/t6.html', 'max-age=1, stale-while-revalidate=4');
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170 get('/t7.html', 'max-age=1, stale-while-revalidate=10');
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171 http_get('/ssi.html');
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172 get('/updating/t.html', 'max-age=1');
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173 get('/updating/t2.html', 'max-age=1, stale-while-revalidate=2');
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174 get('/t8.html', 'stale-while-revalidate=10');
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175 get('/escape.htm%6C', 'max-age=1, stale-while-revalidate=10');
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176 get('/escape html', 'max-age=1, stale-while-revalidate=10');
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177 get('/regexp.html', 'max-age=1, stale-while-revalidate=10');
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178
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179 sleep 2;
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180
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181 like(http_get('/t.html?e=1'), qr/STALE/, 's-i-e - stale');
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182 like(http_get('/tt.html?e=1'), qr/STALE/, 's-i-e - stale 2');
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183 like(http_get('/t.html'), qr/REVALIDATED/, 's-i-e - revalidated');
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184
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185 like(http_get('/t2.html?e=1'), qr/STALE/, 's-w-r - revalidate error');
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186 like(http_get('/t2.html'), qr/STALE/, 's-w-r - stale while revalidate');
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187 like(http_get('/t2.html'), qr/HIT/, 's-w-r - revalidated');
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188
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189 like(get('/t4.html', 'max-age=1, stale-while-revalidate=2'), qr/STALE/,
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190 's-w-r - unconditional revalidate');
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191 like(http_get('/t4.html'), qr/HIT/, 's-w-r - unconditional revalidated');
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192
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193 like(http_get('/t5.html?e=1'), qr/STALE/,
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194 's-w-r - foreground revalidate error');
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195 like(http_get('/t5.html'), qr/REVALIDATED/, 's-w-r - foreground revalidated');
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196
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197 # proxy_pass to regular expression with named and positional captures
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198
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199 like(http_get('/regexp.html'), qr/STALE/, 's-w-r - regexp background update');
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200
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201 TODO: {
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202 local $TODO = 'not yet' unless $t->has_version('1.15.8');
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203
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204 like(http_get('/regexp.html'), qr/HIT/, 's-w-r - regexp revalidated');
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205
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206 }
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207
1186
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208 # UPDATING while s-w-r
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209
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210 $t->write_file('t6.html', 'SEE-THAT');
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211
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212 my $s = get('/t6.html', 'max-age=1, stale-while-revalidate=2', start => 1);
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129b9e4ca3b3 Tests: reduced race in proxy_cache_use_stale tests.
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213 select undef, undef, undef, 0.2;
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214 like(http_get('/t6.html'), qr/UPDATING.*SEE-THIS/s, 's-w-r - updating');
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215 like(http_end($s), qr/STALE.*SEE-THIS/s, 's-w-r - updating stale');
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216 like(http_get('/t6.html'), qr/HIT.*SEE-THAT/s, 's-w-r - updating revalidated');
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217
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218 # stale-while-revalidate with proxy_cache_use_stale updating
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219
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220 like(http_get('/updating/t.html'), qr/STALE/,
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221 's-w-r - use_stale updating stale');
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222 like(http_get('/updating/t.html'), qr/HIT/,
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223 's-w-r - use_stale updating revalidated');
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224
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225 # stale-while-revalidate with proxy_cache_valid
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226
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227 like(http_get('/t8.html'), qr/STALE/, 's-w-r - proxy_cache_valid revalidate');
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228 like(http_get('/t8.html'), qr/HIT/, 's-w-r - proxy_cache_valid revalidated');
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229
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230 sleep 2;
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231
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232 like(http_get('/t2.html?e=1'), qr/STALE/, 's-w-r - stale after revalidate');
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233 like(http_get('/t3.html?e=1'), qr/ 500 /, 's-w-r - ceased');
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234 like(http_get('/tt.html?e=1'), qr/ 500 /, 's-i-e - ceased');
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235 like(http_get('/updating/t2.html'), qr/STALE/,
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236 's-w-r - overriden with use_stale updating');
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237
1178
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238 # stale response not blocked by background update.
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239 # before 1.13.1, if stale response was not sent in one pass, its remaining
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diff changeset
240 # part was blocked and not sent until background update has been finished
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241
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242 $t->write_file('t7.html', 'SEE-THAT' x 1024);
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243
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244 my $r = read_all(get('/t7.html?lim=1', 'max-age=1', start => 1));
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245 like($r, qr/STALE.*^(SEE-THIS){1024}$/ms, 's-w-r - stale response not blocked');
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246
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247 $t->write_file('t9.html', 'SEE-THAT' x 1024);
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248 $t->write_file('ssi.html', 'xxx <!--#include virtual="/t9.html?lim=1" --> xxx');
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249
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250 $r = read_all(http_get('/ssi.html', start => 1));
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251 like($r, qr/^xxx (SEE-THIS){1024} xxx$/ms, 's-w-r - not blocked in subrequest');
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252
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253 # "aio_write" is used to produce "open socket ... left in connection" alerts.
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254
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255 $t->todo_alerts() if $t->read_file('nginx.conf') =~ /aio_write on/
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256 and $t->read_file('nginx.conf') =~ /aio threads/ and $^O eq 'freebsd';
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257
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258 # due to the missing content_handler inheritance in a cloned subrequest,
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259 # this used to access a static file in the update request
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260
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261 like(http_get('/t2.html?if=1'), qr/STALE/, 'background update in if');
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262 like(http_get('/t2.html?if=1'), qr/HIT/, 'background update in if - updated');
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263
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264 # ticket #1430, uri escaping in cloned subrequests
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265
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266 $t->write_file('escape.html', 'SEE-THAT');
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267 $t->write_file('escape html', 'SEE-THAT');
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268
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269 get('/escape.htm%6C', 'max-age=1');
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270 get('/escape html', 'max-age=1');
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271
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272 like(http_get('/escape.htm%6C'), qr/HIT/, 'escaped after escaped');
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273 like(http_get('/escape.html'), qr/MISS/, 'unescaped after escaped');
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274 like(http_get('/escape html'), qr/HIT/, 'space after escaped space');
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275 like(http_get('/escape%20html'), qr/HIT/, 'escaped space after escaped space');
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276
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277 ###############################################################################
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278
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279 sub get {
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280 my ($url, $extra, %extra) = @_;
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281 return http(<<EOF, %extra);
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282 GET $url HTTP/1.1
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283 Host: localhost
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284 Connection: close
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285 X-Cache-Control: $extra
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286
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287 EOF
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288 }
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289
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290 # background update is known to postpone closing connection with client
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291
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292 sub read_all {
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293 my ($s) = @_;
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294 my $r = '';
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295 while (IO::Select->new($s)->can_read(1)) {
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296 $s->sysread(my $buf, 8192) or last;
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297 log_in($buf);
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298 $r .= $buf;
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299 }
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300 return $r;
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301 }
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302
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303 ###############################################################################